Word: differences
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Dates: during 1960-1969
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Fairman is one of a small but growing group of U.S. heart patients who have been wired for living with a variety of pacemakers that are alike in principle but differ in detail. When a diseased heart stops or goes into fibrillation (a useless twitching and fluttering), it can often be restored to normal beat by a single electric shock. In more stubborn cases, small electrical impulses must be transmitted to the heart at a near normal pulse rate (60 to 72 per minute...